<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{margin: 0; padding: 0}
        .header,
        .footer{
            text-align: center;
            background-color: gray;
        }
        .container{
            padding:0 320px 0 801px;
            overflow: hidden;
        }
        .middle,
        .left,
        .right{
            position: relative;
            float: left;
        }

        .middle{
            width: 100%;
            height: 100px;
            background-color: #34ED16;


        }
        .left{
            width: 801px;
            height: 100px;
            background-color: aqua;
            margin-left: -100%;
            left: -801px;
        }
        .right{
            width: 320px;
            height: 100px;
            background-color: aqua;
            margin-left: -320px;
            right: -320px;
        }

    </style>
</head>
<body>
<div class="header">
    <h4>header</h4>
</div>
<div class="container">
    <div class="middle">
        <h4>middle</h4>
        <p>hhhhhhhhhhhh</p>
    </div>
    <div class="left">
        <h4>left</h4>
        <p>llllllllllll</p>
    </div>
    <div class="right">
        <h4>right</h4>
        <p>rrrrrrrrrrrr</p>
    </div>
</div>
<div class="footer">
    <h4>footer</h4>
</div>
</body>
</html>